Finding the Fourth Proportional to 112,135,320.90, 168,202,981.35 and 73,840,076.10
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Solution
The fourth proportional to 112,135,320.90, 168,202,981.35 and 73,840,076.10 is: 110,760,114.15
Step by Step Solution
- Step 1: Write the proportion equation
112,135,320.90 : 168,202,981.35 = 73,840,076.10 : x - Step 2: Convert to fraction form
112,135,320.90/168,202,981.35 = 73,840,076.10/x - Step 3: Cross multiply
112,135,320.90x = 168,202,981.35 × 73,840,076.10 - Step 4: Simplify right side
112,135,320.90x = 12,420,120,943,130,880 - Step 5: Solve for x
x = 12,420,120,943,130,880/112,135,320.90 - Step 6: Final answer
x = 110,760,114.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.